I have the same problem. With no access to the database, the Neo4j is using 2GB of Ram and 43% processing. The calls come to take 20 seconds to respond.
I confess I'm getting very sad with Neo4j, there is always some performance problem and can not identify how to solve. Did you ever solve this problem? Hugs Em segunda-feira, 21 de abril de 2014 01:22:18 UTC-3, Amit Aggarwal escreveu: > > Hello Michael, > > I have upgraded my server to 4GB total RAM and I have allocated minimum > 256 MB and maximum 2GB RAM to neo4j . > But still I got error and today it terminated by saying "JAVA Heap out of > memory". moreover it is not exhausting complete 2 GB ram i saw it using > HTOP. > > I dun know why it is happening any suggestion please. > > On Saturday, 19 April 2014 03:30:30 UTC+5:30, Michael Hunger wrote: >> >> In general probably too little, RAM if you only have 2G in total as OS, >> FS-Caches and other services also take their share. >> >> Depends also on what you're doing. >> >> Perhaps you can share your graph.db/messages.log >> >> (michael <http://twitter.com/mesirii>)-[:SUPPORTS]->(*YOU*)-[:USE]->( >> Neo4j <http://neo4j.org/>) >> Learn Online <http://neo4j.org/learn/online_course>, Offline >> <http://www.neo4j.org/events> or Read a Book <http://graphdatabases.com/> >> (in Deutsch <http://bit.ly/das-buch>) >> We're trading T-shirts for cool Graph Models <http://bit.ly/graphgist> >> >> >> On Fri, Apr 18, 2014 at 11:31 PM, Amit Aggarwal <[email protected]> >> wrote: >> >>> Hello, >>> >>> I am using neo4j 2.2 commmunity version on ubuntu 12.04 64bit 2 GB RAM >>> >>> I saw that after running neo4j for sometime , i got this >>> >>> 2013-07-09 12:19:51.933+0000 INFO [org.neo4j]: GC Monitor: Application >>> threads blocked for an additional 3406ms [total block time: 441.511s] >>> 2013-07-09 12:20:17.351+0000 INFO [org.neo4j]: GC Monitor: Application >>> threads blocked for an additional 3143ms [total block time: 444.654s] >>> 2013-07-09 12:20:20.654+0000 INFO [org.neo4j]: GC Monitor: Application >>> threads blocked for an additional 3202ms [total block time: 447.856s] >>> 2013-07-09 12:20:24.281+0000 INFO [org.neo4j]: GC Monitor: Application >>> threads blocked for an additional 3527ms [total block time: 451.383s] >>> 2013-07-09 12:20:27.954+0000 INFO [org.neo4j]: GC Monitor: Application >>> threads blocked for an additional 3573ms [total block time: 454.956s] >>> 2013-07-09 12:20:31.193+0000 INFO [org.neo4j]: GC Monitor: Application >>> threads blocked for an additional 3139ms [total block time: 458.095s] >>> >>> in message.log >>> >>> Whats does it want ?? As of now db has only around 15500 nodes and >>> around same number of relationships.. >>> >>> >>> Here is my neo4j-wrapper.conf >>> >>> >>> >>> wrapper.java.additional=-Dorg.neo4j.server.properties=conf/neo4j-server.properties >>> >>> wrapper.java.additional=-Djava.util.logging.config.file=conf/logging.properties >>> wrapper.java.additional=-Dlog4j.configuration=file:conf/log4j.properties >>> >>> #******************************************************************** >>> # JVM Parameters >>> #******************************************************************** >>> >>> wrapper.java.additional=-XX:+UseConcMarkSweepGC >>> wrapper.java.additional=-XX:+CMSClassUnloadingEnabled >>> >>> # Uncomment the following lines to enable garbage collection logging >>> #wrapper.java.additional=-Xloggc:data/log/neo4j-gc.log >>> #wrapper.java.additional=-XX:+PrintGCDetails >>> #wrapper.java.additional=-XX:+PrintGCDateStamps >>> #wrapper.java.additional=-XX:+PrintGCApplicationStoppedTime >>> #wrapper.java.additional=-XX:+PrintPromotionFailure >>> #wrapper.java.additional=-XX:+PrintTenuringDistribution >>> >>> # Uncomment the following lines to enable JVM startup diagnostics >>> #wrapper.java.additional=-XX:+PrintFlagsFinal >>> #wrapper.java.additional=-XX:+PrintFlagsInitial >>> >>> # Java Heap Size: by default the Java heap size is dynamically >>> # calculated based on available system resources. >>> # Uncomment these lines to set specific initial and maximum >>> # heap size in MB. >>> wrapper.java.initmemory=256 >>> wrapper.java.maxmemory=1000 >>> >>> #******************************************************************** >>> # Wrapper settings >>> #******************************************************************** >>> # path is relative to the bin dir >>> wrapper.pidfile=../data/neo4j-server.pid >>> >>> #******************************************************************** >>> # Wrapper Windows NT/2000/XP Service Properties >>> #******************************************************************** >>> # WARNING - Do not modify any of these properties when an application >>> # using this configuration file has been installed as a service. >>> # Please uninstall the service before modifying this section. The >>> # service can then be reinstalled. >>> >>> # Name of the service >>> wrapper.name=neo4j >>> >>> # User account to be used for linux installs. Will default to current >>> # user if not set. >>> wrapper.user= >>> >>> >>> >>> Thanks >>> Amit Aggarwal >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Neo4j" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- You received this message because you are subscribed to the Google Groups "Neo4j" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
